public void GetDtdValidatorTest1() { SerializeTool serialize = new SerializeTool("testObjectToValidate.xml"); var validator = serialize.GetDtdValidator(); Assert.IsNotNull(validator); if (validator.Validate()) { Debug.Print("OK"); } else { string message = ""; foreach (ValidationErrorInfo validatorLastException in validator.LastExceptions) { message += "\n"; message += $"{validatorLastException.Message} (row/col)=>{validatorLastException.LineNumber}/{validatorLastException.LinePosition}"; } Assert.Fail(message); } }